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• How can I edit a css rule in jQuery?

  - by chacham15

  The purpose is that rows are dynamically added to a table and it is not as nice (and slower) to apply the rule manually later. The specific example is that I am creating a tree table to represent a folder directory. Each folder is a div. In each div, there is a ul with an li for each columns' information. These li have a class name equivalent to the column name. This provides column width. I want to make the columns resizable however. I could do $('.className').css('width', newWidth) but then this wont apply to newly inserted items. Therefore, I want to modify the css rule. How do I do this?

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• Can Goldberg algorithm in ocamlgraph be used to find Minimum Cost Flow graph?

  - by Tautrimas

  I'm looking for an implementation to the Minimum Cost Flow graph problem in OCaml. OCaml library ocamlgraph has Goldberg algorithm implementation. The paper called Efficient implementation of the Goldberg-Tarjan minimum-cost flow algorithm is noting that Goldberg-Tarjan algorithm can find minimum cost graph. Question is, does ocamlgraph algorithm also find the minimum cost? Library documentation only states, that it's suitable at least for the maximum flow problem. If not, does anybody have a good link to a nice any minimum cost optimization algorithm code? I will manually translate it into OCaml then. Forgive me, if I missed it on Wikipedia: there are too many algos on flow networks for the first day!

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• cahoots - zend framework application is not running

  - by Gaurav Sharma

  hello everyone, I downloaded cahoots from sourceforge.net. It is a zend framework application. Very nicely done and I must say that it should be a nice tutorial for everyone who is struggling to learn Zend framework. But my problem is that even after reading the instructions this application is still not running. The application just doesn't run at all giving an error message. I have tried my best. no success :( Also I wanted to execute the application as "http://localhost/cahoots" but it runs by this URL "http://localhost/cahoots/public". why is it so.? I am using XAMPP v 1.7.1 with mod-rewrite enabled. Please guide me through the process. Any good tutorials on zend framework with zend tool would be appreciable. I want to learn this framework. Thanks

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• CF - Mobile Managed Gestures

  - by no9

  Im looking for a nice demo/sample using Windows Mobile Managed Gestures. I have a main view that contains a single panel. Every item in the panel is another panel containing pictureBox and a label. I would like to implement scrooling (finger flicking) to avoid using thin scroolers. Are the Windows Mobile Managed Gestures the right solution to get this working, if so can some one provide me with a begginers demo? I downloaded the source code from http://code.msdn.microsoft.com/gestureswm/Release/ProjectReleases.aspx?ReleaseId=3438 but i would need a simple example using this source. Also a question ... does this work only on 6.5? Even if i got this working is there a way to support this in 6.0 ? thanx!

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• Is it possible to get anti-alias for Font in Rebol Graphics VID ?

  - by Rebol Tutorial

  Anti-alias works for Draw but I can't see how to get anti-alias for font : is it possible anywhow (including hacking rebol vid ...) because font in the picture generated below is not nice: view layout [ box 278x185 effect [ ; default box face size is 100x100 draw [ anti-alias on ; information for the next draw element (not required) line-width 2.5 ; number of pixels in width of the border pen black ; color of the edge of the next draw element fill-pen radial 100x50 5 55 5 10 10 71.0.6 30.10.10 71.0.6 ; the draw element box ; another box drawn as an effect 15 ; size of rounding in pixels 0x0 ; upper left corner 278x170 ; lower right corner ] ] pad 30x-150 Text "Experiment" font [name: "Impact" size: 24 color: white] image http://www.rebol.com/graphics/reb-logo.gif ]

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• What is viewstate in JSF, and how is it used?

  - by MatthieuF

  In JSF, there is a viewstate associated with each page, which is passed back and forth with submits etc. I know that viewstate is calculated using the states of the various controls on the page, and that you can store it either client side or server side. The question is: how is this value used? Is it used to validate the values sent at submit, to ensure that the same request is not sent twice? Also, how is it calculated - I realise that richfaces may be calculated differently from myfaces, but an idea would be nice. Thanks.

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• Algorithm - combine multiple lists, resulting in unique list and retaining order

  - by hitch

  I want to combine multiple lists of items into a single list, retaining the overall order requirements. i.e.: 1: A C E 2: D E 3: B A D result: B A C D E above, starting with list 1, we have ACE, we then know that D must come before E, and from list 3, we know that B must come before A, and D must come after B and A. If there are conflicting orderings, the first ordering should be used. i.e. 1: A C E 2: B D E 3: F D result: A C B D E F 3 conflicts with 2, therefore requirements for 2 will be used. If ordering requirements mean an item must come before or after another, it doesn't matter if it comes immediately before or after, or at the start or end of the list, as long as overall ordering is maintained. This is being developed using VB.Net, so a LINQy solution (or any .Net solution) would be nice - otherwise pointers for an approach would be good.

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• jQuery Audio Player

  - by tony noriega

  I was given 2 MP3 files, one that is 4.5Mb and one that is 5.6Mb. I was instructed to have them play on a website i am managing. I have found a nice, clean looking CSS based jQuery audio player. My question is, is this the right solution for files that big? I am not sure if the player preloads the file, or streams it ? (if that is the correct terminology) i dont deal much with audio players and such... this player is from happyworm.com/jquery/jplayer/latest/demo-01.htm is there another approach i shoudl take to get this to play properly? I dont want it to have to buffer, and the visitor to wait, or slow page loading...etc..etc.. i want it to play clean and not affect the visitors session to the site. thanks

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• Filtering and copying with PowerShell

  - by Bergius

  In my quest to improve my PowerShell skills, here's an example of an ugly solution to a simple problem. Any suggestions how to improve the oneliner are welcome. Mission: trim a huge icon library down to something a bit more manageable. The original directory structure looks like this: /Apps and Utilities /Compile /32 Bit Alpha png /Compile 16 n p.png /+ 10 or more files /+ 5 more formats with 10 or more files each /+ 20 or so icon names /+ 22 more categories I want to copy the 32 Bit Alpha pngs and flatten the directory structure a bit. Here's my quick and very dirty solution: $dest = mkdir c:\icons; gci -r | ? { $_.Name -eq '32 Bit Alph a png' } | % { mkdir ("$dest\" + $_.Parent.Parent.Name + "\" + $_.Parent.Name); $_ } | gci | % { cp $_. FullName -dest ("$dest\" + $_.Directory.Parent.Parent + "\" + $_.Directory.Parent) } Not nice, but it solved my problem. Resulting structure: /Apps and Utilities /Compile /Compile 16 n p.png /etc /etc /etc How would you do it?

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• Line numbering in Visual Studio

  - by Cyclone

  Why doesn't VS have any sort of line numbering? Is there any way to enable it, or a plugin for it? I know, the number of lines of code in a program doesn't matter, but sometimes it is nice to know how long a program is, or what line number something is for reference. I can't seem to find that as an option anywhere, to my surprise. Thanks for the help! This is Visual Studio 2010 Ultimate. (if you have read my older questions, I've been using 2008 Express until now.)

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• SwfUpload flash uploader not visible and not working in IOS

  - by Sunny

  i am working on a web application based on media gallery.In this application i am uploading media using SWFUpload either images and videos.When i try to open my application on IOS then uploader not visible there.Where it is working fine on safari installed on windows.I want some suggestions from experts of this field. one site who is using SWFUpload is http://www.ehproductions.com/mediaimage.htm. Here SwfUploader working nice on windows but not on IOS machines. Is there any javax html5 compatible uploader? Thanks in advance.

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• Can 3D OpenGL game written in Python look good and run fast?

  - by praavDa

  I am planning to write an simple 3d(isometric view) game in Java using jMonkeyEngine - nothing to fancy, I just want to learn something about OpenGL and writing efficient algorithms (random map generating ones). When I was planning what to do, I started wondering about switching to Python. I know that Python didn't come into existence to be a tool to write 3d games, but is it possible to write good looking games with this language? I have in mind 3d graphics, nice effects and free CPU time to power to rest of game engine? I had seen good looking java games - and too be honest, I was rather shocked when I saw level of detail achieved in Runescape HD. On the other hand, pygame.org has only 2d games, with some starting 3d projects. Are there any efficient 3d game engines for python? Is pyopengl the only alternative? Good looking games in python aren't popular or possible to achieve? I would be grateful for any information / feedback.

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• How to unit test internals (organization) of a data structure?

  - by Herms

  I've started working on a little ruby project that will have sample implementations of a number of different data structures and algorithms. Right now it's just for me to refresh on stuff I haven't done for a while, but I'm hoping to have it set up kind of like Ruby Koans, with a bunch of unit tests written for the data structures but the implementations empty (with full implementations in another branch). It could then be used as a nice learning tool or code kata. However, I'm having trouble coming up with a good way to write the tests. I can't just test the public behavior as that won't necessarily tell me about the implementation, and that's kind of important here. For example, the public interfaces of a normal BST and a Red-Black tree would be the same, but the RB Tree has very specific data organization requirements. How would I test that?

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• Refresh a jQuery function

  - by Toro

  Is possible refresh a function every x seconds or refresh it on single event? I explain: I have a function that make pagination on my website, inside every div that are "pages" I have some pictures where I have added LightBox. Everything works nice on the first div (page) but when I change the page it doesnt' work anymore. I tried to fix in this way: $('.pagination a').click(function () { initShadow(); }); In this way it work on the pageLoad and on the first page that I change, than it stop again. So I need to fix this issue, everytime I change the "page" I would like it works fine. Is possible to refresh a function every x second or to refresh it everytime I click on the pagination buttons?

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• Overwriting arguments object for a Javascript function

  - by Ian Storm Taylor

  If I have the following: // Clean input. $.each(arguments, function(index, value) { arguments[index] = value.replace(/[\W\s]+/g, '').toLowerCase(); }); Would that be a bad thing to do? I have no further use for the uncleaned arguments in the function, and it would be nice not to create a useless copy of arguments just to use them, but are there any negative effects to doing this? Ideally I would have done this, but I'm guessing this runs into problems since arguments isn't really an Array: arguments = $.map(arguments, function(value) { return value.replace(/[\W\s]+/g, '').toLowerCase(); }); Thanks for any input. EDIT: I've just realized that both of these are now inside their own functions, so the arguments object has changed. Any way to do this without creating an unnecessary variable?

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• Rank Source Control Options-VSS vs CVS vs none vs your own hell

  - by Roman A. Taycher

  It seems like a lot of people here and on many programmer wikis/blogs/ect. elsewhere really dislike VSS. A lot of people also have a serious dislike for cvs. In many places I have heard a lot of differing opinions on whether or not using VSS or cvs is better or worse then using no source control, please rate the worst and explain why!!!!! you rated them this way. Feel free to throw in your own horrible system in the rankings. If you feel it depends on the circumstances try to explain the some of the different scenarios which lead to different rankings. (note:I see a lot of discussion of what is better but little of what is worse.) second note: while both answers are nice I'm looking less for good replacements and more for a comparison of which is worse and more importantly why!

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• 3G/Edge/GPRS IP addresses and geocoding

  - by LookitsPuck

  Hey all! So, we're looking to develop a mobile website. On this mobile website, we'd like to automatically populate a user's location (with proper fallback) based on their IP address. I'm aware of geocoding a location based on IP address (mapping to latitude, longitude and then getting the location with that information). However, I'm curious how accurate this information is? Are mobile devices assigned IP's when they utilize 3G, EDGE, and GPRS connections? I think so. If that is so, does it map to a relatively accurate location? It doesn't have to be spot on, but relatively accurate would be nice. Thanks! -Steve

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• GenerateBootstrapper fails to create a working setup.exe

  - by Darren

  I’m seeing some odd behaviour I can’t explain. I'm using wix to generate a msi and using the msbuild GenerateBootstrapper task to handle pre-requisites. It all seems to build correctly i.e. there are no error or warnings but the generated setup.exe won’t run. It gives a nice blank error dialog and the event log gives about the same information. The kicker is that if I drop to the command line and run msbuild manually on the project and specify the bootstrapper target it generates a correct and working setup.exe. I've used this wix article as a base and a number of questions on StackOverflow to no avail. Has anyone seen this behaviour before, better still a fix?

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• Determine which process (b)locks a file, programmatically (under Windows >= XP)

  - by fred-hh

  How to programmatically determine from a process P, which other process P' has a lock on a file, that prevents P from recreating that file ? I know there are tools to do that, but how do they achieve that ? (Context: a batch program that runs overnight fails because of a locked file. Running an admin tool the next day may be too late to get useful information. So it would be nice if the batch program itself was able to determine the culprit.) EDIT: Added complexity: the file resides on a DFS and P' might not run on the same machine as P (but maybe does). But a solution that works locally would be a good beginning.

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• Location of my own directories

  - by Nicsoft

  Hello, I am trying to understand how to create my own directory tree and access it from my application. I am doing some kind of learning program and want to create a directory structure like this: -MyLessonsDirectory --LessonDirectory_1 ---Step_1 ---Step_2 ---Step_3 --LessonDirectory_2 ---Step_1 ---Step_2 ---Step_3 . . and so on In each "Step"-directory I will have specific content for that step of the lesson. The content is added by me while developing. Hence, I don't want to create the structure and content from within the application, just access it and reading the content of the directories. If I can create this kind of structure and use it it will be very easy to create a nice design that makes it easy to create new lessons in my app. What I cannot figure out is where I should create those directories in the file-structure in xCode and what is the path to those directories from my application. Thanks in advance!

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• Nested form using accepts_nested_attributes_for with pre-population from another table

  - by mikeydelamonde

  I'm using Rails 2.3.5 and have a nested structure as follows: Lists has_many Items Items_Features has_many Features Items_Features has_many Items Items_Features has a text field to hold the value of the feature Then I have a nested form with partials to update and display this so that it updates Lists, Items and Items_Features What I want to do is generate input fields for each of the rows in features so that the user can fill in a value and it gets inserted/updated in items_features. I also want a label next to the box to display the feature name. It might look like this: List name: Cheeses Item1 name: Edam Feature, hardness: - fill in - <= this list of features from feature table Feature, smell: - fill in - How can I interrupt the nice and easy accepts_nested_attributes_for system to display this as I want?

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• gametutorials.com questions and reviews DirectX tutorials

  - by numerical25

  Just curious to know if anyone has ever used gametutorials.com products for learning directX. I was debating on whether I should buy it or not. I read online that most of his tutorials were written in the source code. It's nice to heavily comment your code but if most of the tutorial is in his code then I don't think that is necessarily the best way to do a tutorial. But anyhow, I am not sure about that, I am just checking for clarification. and checking to see if it would be a good investment.

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• ORM framework that extends base class with database-implementation.

  - by aioobe

  I have a game consisting of a client / server + a webpage. A central notion in both client and game-/webserver is an Account. Accounts are stored in a database thus I'm in need of some ORM and recently had a look at Hibernate and Cayenne. My understanding however, is that both frameworks provide an "DatabaseBackedAccount"-class which I extend with my other Account methods. My problem is that the Account class is reused heavily on the client side, and I would obviously not want to include database-related code on the client implementation. My current solution is to have an Account class (shared by server and client) and extend this with a DatabaseBackedAccount (overriding setter-methods and providing a commit method) on the server side. I find this quite natural and nice, however I've had to implement all gory sql-details and ORM myself. Is there any way to "turn the table" in any existing ORM framework, so that the generated classes extend my existing class?

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• What are the virtues of using XML comments in .NET?

  - by Michal Czardybon

  I can't understand the virtues of using XML comments. I know they can be converted into nice documentation external to the code, but the same can be achieved with the much more concise DOxygen syntax. In my opinion the XML comments are wrong, because: They obfuscate the comments and the code in general. (They are more difficult to read by humans). Less code can be viewed on a single screen, because "summary" and "/summary" take additional lines. They suggest that all method parameters have to be commented, whereas 90% of them are obvious and SHOULD be left not commented. The only problem I have with this is that my point of view seems to be in minority. Why?

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• How to host your own http-like server using ServiceHost or its analog capable to host WCF services?

  - by Ole Jak

  I use ServiceHost for hosting WCF cervices. I want to host near to my WCF services my own tcp programm (like WCF service but with out WCF) for direct sockets operations (like lien to some sort of broadcasting TCP stream) I want to use ServiceHost for somehow simplyfiing proces of creating my TCP sender\listener, to somehow control namespaces (so I would be able to let my clients to send TCP streams directly into my service using some nice URLs like www.example.com:34123/myserver/stream?id=1 or www.example.com:34123/myserver/stream?id=222 and so that I will not be bothered with Idea of 1 client for 1 socket at one time moment, BTW I realy want to keep my WCF services on the same port as my own server or what it is...) Can any body please help me with this?

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